28063172050 has 24 divisors (see below), whose sum is σ = 52462480356. Its totient is φ = 11168283840.

The previous prime is 28063172041. The next prime is 28063172101. The reversal of 28063172050 is 5027136082.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 12360325329 + 15702846721 = 111177^2 + 125311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28063171997 and 28063172015.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1414677 + ... + 1434376.

Almost surely, 2^28063172050 is an apocalyptic number.

28063172050 is a deficient number, since it is larger than the sum of its proper divisors (24399308306).

28063172050 is a wasteful number, since it uses less digits than its factorization.

28063172050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849262 (or 2849257 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 28063172050 in words is "twenty-eight billion, sixty-three million, one hundred seventy-two thousand, fifty".